mirror of git://sourceware.org/git/glibc.git
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/* 64-bit integer comparison.
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Copyright (C) 1989, 1992-2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <endian.h>
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#include <stdlib.h>
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#include <bits/wordsize.h>
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#include <shlib-compat.h>
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#if __WORDSIZE != 32
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# error This is for 32-bit targets only
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#endif
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#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_6)
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typedef unsigned int UQItype __attribute__ ((mode (QI)));
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef unsigned int UDItype __attribute__ ((mode (DI)));
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#define Wtype SItype
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#define HWtype SItype
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#define DWtype DItype
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#define UWtype USItype
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#define UHWtype USItype
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#define UDWtype UDItype
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#define W_TYPE_SIZE 32
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#include <stdlib/longlong.h>
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#if __BYTE_ORDER == __BIG_ENDIAN
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struct DWstruct { Wtype high, low;};
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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struct DWstruct { Wtype low, high;};
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#else
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#error Unhandled endianity
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#endif
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typedef union { struct DWstruct s; DWtype ll; } DWunion;
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Wtype
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___cmpdi2 (DWtype a, DWtype b)
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{
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DWunion au, bu;
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au.ll = a, bu.ll = b;
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if (au.s.high < bu.s.high)
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return 0;
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else if (au.s.high > bu.s.high)
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return 2;
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if ((UWtype) au.s.low < (UWtype) bu.s.low)
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return 0;
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else if ((UWtype) au.s.low > (UWtype) bu.s.low)
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return 2;
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return 1;
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}
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symbol_version (___cmpdi2, __cmpdi2, GLIBC_2.0);
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Wtype
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___ucmpdi2 (DWtype a, DWtype b)
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{
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DWunion au, bu;
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au.ll = a, bu.ll = b;
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if ((UWtype) au.s.high < (UWtype) bu.s.high)
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return 0;
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else if ((UWtype) au.s.high > (UWtype) bu.s.high)
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return 2;
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if ((UWtype) au.s.low < (UWtype) bu.s.low)
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return 0;
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else if ((UWtype) au.s.low > (UWtype) bu.s.low)
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return 2;
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return 1;
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}
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symbol_version (___ucmpdi2, __ucmpdi2, GLIBC_2.0);
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#endif
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